Tag: "replacements" at biology news

...em for quickly synthesizing and screeningpotential replacements for standard antibiotics, such aspenicillin and amoxicillin. All of these antibiotics fall intothe category known as beta lactams. Chemistry graduate student Jie Wang will explain a key part ofthe system Sunday, Sept. 7 during the national meeting of...

...lso have special uses, smallimpacts, and where the replacements for them would cause other problemsor issues," Wuebbles said. "In such cases, it might make moresense to reconsider current policy and allow the continued use of some chemicals."...

...fection in any dairy herd that is buying animalsas replacements or that is rapidly expanding, especially when newly addedanimals are not initially separated from the resident herd and where sick cowsare housed near cows that have recently calved. We currently do not know all ofthe potential risk factors for the ...

...r longer-lasting orthopedic implants--such asjoint replacements for hips and knees--is ultrahigh molecular weightpolyethylene paired with an alloy of cobalt and chromium, a combination that hasproven to be durable and compatible with the human body. But even joints madefrom these components last only about a dec...

...g renaldialysis. They also have potential uses as replacements for hardened arteriesin the legs of diabetes patients who have lost circulation to the lower part oftheir legs, he said. Dr. Runt will present his paper, PMSE 298, on Thurs., Aug. 27, at 3:00 p.m. atthe Westin, America South, 4th Floor. Dr. Szycher w...

...ighten the smiles of thousands ofAmericans. Joint replacements help thousands more people regain mobility. In10 percent of cases, however, the replacement fails, often because of loosening.David Puleo, Ph.D., associate professor of biomedical engineering, University ofKentucky College of Medicine, conducts rese...

... technique will allow manufacturers to producebone replacements that actively encourage the natural bone around them to grow,pacemaker filters and intricate firearm and watch parts. The process, called Plasma Atomisation Technology (PAT), produces sphericaltitanium powders in three broad size ranges by melting ti...

...Previously, one of the more effective formaldehyde replacements was an organicacid called butanetetracarboxylic acid (BTCA). But the exceedingly high cost ofBCTA prevented its applications on a commercial scale. Drawing on the BCTA technology, Yang found that citric acid, while noteffective itself, could be comb...

...the half-million people who undergo vein or artery replacements each year isoffered by a new "biomaterial" polymer that supports the growth of endothelialcells and could be used for blood vessel replacements. Often, patients withhardening of the arteries cannot supply their own replacement blood vessels fromelse...

...somust receive mineralcorticoid and glucocorticoid replacements throughout theirlives to help maintain salt and sugar balance." Miller's lab has been working in cooperation with Michael Baldwin, PhD, andThomas James, PhD, in the department of pharmaceutical chemistry at UCSF todetermine the structure of StAR and...

...ork of regional extinctions of certain species and replacements by others,not by the creation of new lineages, which has been considered as an alternativepossibility. Eventually, the dinosaurs met their demise at the end of the Cretaceous. ButSereno isn't letting the mystery of these animals' disappearance oversh...

... ages. These devices rangefrom artificial skeletal replacements such as hips, to pacemakers, to devices used to keepblood vessels open after angioplasty such as stents. The major unsolved problem for thesedevices is bio-compatibility. No completely satisfactory way has yet been found to preventthe defense systems...

...pany has already marketed synthetic and human skin replacements to treat burns and skin ulcers and is developing special cartilage replacements for those who suffer joint injuries or arthritis, and small blood vessels that will repair themselve...

...ay to create new tissues for organ transplants and replacements for cells destroyed by diseases like diabetes or trauma like spinal cord injuries. As ethical and legal controversy threatens to cloud the future of embryonic stem cell research, however, some scientists have turned to adult stem cells to discover w...

...eloping into mature neurons. Confirmation that the replacements were projecting their axons to make connections with other neurons came from additional anatomical labeling with dyes. Macklis warns that this experiment is merely a first crude step in exploring the pathway of neural regeneration. "Not for a moment...

...healthy nonsmokers who had not been taking hormone replacements or lipid-lowering medications. During a dietary adaptation period, they consumed a milk protein supplement while reducing their consumption of other sources of calories and protein to maintain weight stability. Subsequently, they were randomly assign...

...y's lubricating proteins and could make future hip replacements last longer. More than 300,000 people a year have surgery to replace damaged and deteriorating hips. But these artificial hip implants can slowly deteriorate and eventually break down due to wear, often because of inadequate lubrication. (COLL 413, W...

...erica are driving researchers to look carefully at replacements for petro-chemical products. This week at the 222nd National Conference of the American Chemical Society (ACS), MSU researchers are presenting four papers outlining methods to turn plants into composite materials, said Lawrence Drzal, director of th...

...rs. Although some dog owners elect to perform hip replacements on severely affected pets, the expense of this surgery causes others to elect euthanasia. "Degenerative joint disease is phenomenally prevalent in dogs," Smith said. "This work will allow breeders and pet owners to make informed decisions to help ...

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